1 417 543 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
6430485363481	13	42.5	old
478693387204847	15	48.8	2008-08-26 20:19:07
84621244298147214857	20	66.2	2017-11-17 04:11:49
225852582337280468201	21	67.6	2019-01-25 12:26:35
46871745708139085146793	23	75.3	2021-10-20 13:16:17

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	Oliver Kruse	61F64C17BCCCBC48	2	0	1	3
Verified (Factored)	2017-10-26	kkmrkkblmbrbk	61F64C17BCCCBC48	2	1206698	1	3
Verified (Factored)	2017-11-17	kkmrkkblmbrbk	E780355E93900FDC	3	1407337	5	3
Verified (Factored)	2017-11-18	Oliver Kruse	E780355E93900FDC	3	1017106	5	3
Verified (Factored)	2019-01-25	ATH	E780355E93900FDC	4	1019411	5	3
Verified	2021-10-21	SRJ2877	E780355E93900FDC	5	949685	5	3

History

Date	User	Type	Result
2021-10-21	curtisc	CERT	PRP Certification Proof certified good
2021-10-21	SRJ2877	C-PRP	M1417543/6430485363481/478693387204847/84621244298147214857/225852582337280468201/46871745708139085146793 : E780355E93900FDC PRP proof power = 6 PRP: Verified Proof certified good
2021-10-20	TJAOI	F-ECM	Factor: 46871745708139085146793 / (ECM curve 7, B1=250000, B2=35000000)
2019-01-25	ATH	C-PRP	M1417543/6430485363481/478693387204847/84621244298147214857/225852582337280468201 : E780355E93900FDC PRP: Verified (Factored) PRP without proof (not generated)
2019-01-25	TJAOI	F-ECM	Factor: 225852582337280468201 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-18	Oliver Kruse	C-PRP	M1417543/6430485363481/478693387204847/84621244298147214857 : E780355E93900FDC PRP: Verified (Factored) PRP without proof (not generated)
2017-11-17	kkmrkkblmbrbk	C-PRP	M1417543/6430485363481/478693387204847/84621244298147214857 : E780355E93900FDC PRP: Verified (Factored) PRP without proof (not generated)
2017-11-17	ATH	F-ECM	Factor: 84621244298147214857 / (ECM curve 1, B1=50000, B2=5000000)
2017-10-26	kkmrkkblmbrbk	C-PRP	M1417543/6430485363481/478693387204847 : 61F64C17BCCCBC48 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1417543/6430485363481/478693387204847 : 61F64C17BCCCBC48 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 478693387204847